Endless-chain track for tractors.



BLHO LT. EMDLESS CHAIN TRACK FOR TRACTORS.

APPLICATION FIIYQE'D JULY n 1911. I Patented Mar. 5, 1918.

' INVEN'IOR WITNESSES:

lawany i Antoni-n UNITED STATES PATENT orrion.

BEI IJAMIN HOLT, 0F STOCKTON, CALIFORNIA.

ENDLESS-CHAIN TRACK r03 'rnac'rons.

Specification otLcttcrs Patent.

Patented Mar. 5,1918.

Application filed July 17, 1917. Serial No, 181,103.

To all whom it may conce'r'h:

' Be it known thatl, BENJAMIN How, a citizen of the United States, residing at Stockton,: in. the county of San Joaquin and State of Qalifornimhave invented newandv i.l'sefu1 \Im rorements I in Endless Chain "ctor'sjof which the following is a speeificat.

' This in-ve' tion'rdates to endless chain tracks sfi'ch a are used'in tractors of the self-laying t. ack type.

In a prior application, namely, Serial Number 165,338, filed April th, 1917, I

show and describe pads or cushions carried bythe drive and idler wheels of the tractor truck mechanism toeng'age with the chain track for the purpose of absorbing the'shocks I of the parts.

and eliminating the noise.

In the present case I arrange such pads orcushlons on. the links of the chant and secure,

the; same results, while permitting plain wheels of the usual type-to be en'iploycd; Ordinarily the linksstraddle the rim of the wheel and have pin teeth contacting with the periphery thereof which, ilropcratiou,

, strike with considerable force causing shocks and nolseandresulting in a quick wearing arranging pads or cush- B ions on each lin' so that they engage the periphery of the wheels and'maintai'ning the pill teeth out of substantial contact therewi th the noise and shocks are eliminated metallic material.

and the wear falls upon easily and cheaply replaceable parts. The pads may be offiber, rubber, or other suitable .0ne form 'which my invention may assume is exemplified in the following description and illustrated in the accompanying drawihgs, in which- I Figure 1 shows a side elevation, partly in section, of one end of a tractor truck mechauism having a chaintraekequipped with pads on cushions in accordance with my invention. 4 U Fig. 2 shows a sectional view. taken on the line 22 of Fig. l.

I show a blankrini idler 'or guide wheel 10 over which runs an endless chain track made up of a series of articulated link sectio'iis, each section comprising spaced side plates 11' connected together at ,one end by a sleev or gudgeon block.12 cored 'to receive a journal pin 13 for connecting adjacent linkstogether. Each pair of side plates carries'a shoe or base member 14, either integral yleldlng and non-' 'or disconnectiblc therewith. The sleeves or gud geon blocks 12 constitute pin teeth to. engage with the sprocket teeth on the drive wheel, not shown. The side bars 11 form r'a-ils on their inner longitudinal edges for supporting a series of rollers 15, the latter .bemg connected to the tractor or vehicle.

frame and supporting the entire weight of the same. The side bars 11 straddle the rims ot' the driving and guide wheels in opera tion'.

In the middle portion of eachli'nk on the base or shoe 14 I- arrange a block 16, preferably of wood-,.and upon it another block 17 preferably of rubber, and connect the two-together and fasten them to the shoe by means of angle plates 18 riveted in place thereon.-

The rubber blocks arehigh enough to engagewith 'therim of the wheel to keep the :pin

teeth from forcibly striking thesame- These blocks, therefore, receive the burden of the wear and act to cushion the links and renjder the "operation of'the tractor noiseless.

They are quickly and :easily replaceable when worn. By arranging them on the center or middleportion of each link and hav:

ing them of the size shown the will fit" be ket d i'iving wheeltween the teeth of the s roe in passing around the atter. Various changes in'the construction and arrangement of; the, several parts herein shown and described may be employed without departing from the spirit of myinvention as disclosed in the appended claims. 1

Having thus described my invention, what 'I claim anddesire to secure by Letters Pat-- exit isless chain track made up of a series of artic 1. In a tractor truck mechanism, an endulated link sections, a wheel over-which, said track ope'rates,'saidwheel having its rim "straddled by the side bars'of the link sections, pin teeth on said links, a shoe on each 1 link, and a pad of yielding and non-metallic material detachably connected to said shoe near the center thereof and extendin between the side bars for engagement wit the rim of the wheel to maintain the pin teeth out of forcible contact with said rim.

. 3. In a tractor truck mechanism, an end- .said pad comprising a block of wood resting on the shoe and a the same. I a i 4. In a tractor truck mechanism, an andless chain track made up of a series of articock ofrubber overlying ulated link sections, a wheel over which said I said wheel having its rim track operates e .side bars of the link secstraddled by t ions, pin teeth on said links, a shoe :oneachlmk, a pad of yielding and non-metallic material detachably connected to said shoe near thecenter thereof and extending be tween the side bars for engagement with the rim of the wheel to maintain the pin teeth out of forcible contact with said rim, said pad comprisin a block of wood resting on the shoe and a lock of rubber overlying the same, and angle plates for connecting said blocks together and fastening the same to the shoe.

5. An endless chain track for tractors made up of a series of articulated link sections, each section comprising spaced side bars formed with interconnecting pin teeth attheir ends, a shoe carried by each link, and a pad of yielding,'non-me'tallic material Witnesses:

7 Omvmz ;H. E

presence of two subscribing" BENJAM I NQHOLT;

' on each shoe between the side bars centrally 

